It’s going to be a little more difficult to ferret out which members of Congress are lavished with all-expenses-paid trips around the world after the House has quietly stripped away the requirement that such privately sponsored travel be included on lawmakers’ annual financial-disclosure forms.

The move, made behind closed doors and without a public announcement by the House Ethics Committee, reverses more than three decades of precedent. Gifts of free travel to lawmakers have appeared on the yearly financial form dating back its creation in the late 1970s, after the Watergate scandal. National Journal uncovered the deleted disclosure requirement when analyzing the most recent batch of yearly filings.